import requests
url="http://www.baidu.com"
resp=requests.get(url)#向url对应的服务器发送相应的get请求，获得对应的相应 。

import requests
url=r"https://www.baidu.com/s"
Headers={"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
     }
response=requests.get(url=url,headers=Headers)

> r = requests.get('http://en.wikipedia.org/wiki/Monty_Python')

> r.headers

{'content-length': '56170', 'x-content-type-options': 'nosniff', 'x-cache':

'HIT from cp1006.eqiad.wmnet, MISS from cp1010.eqiad.wmnet', 'content-encoding':

'gzip', 'age': '3080', 'content-language': 'en', 'vary': 'Accept-Encoding,Cookie',

'server': 'Apache', 'last-modified': 'Wed, 13 Jun 2012 01:33:50 GMT',

'connection': 'close', 'cache-control': 'private, s-maxage=0, max-age=0,

must-revalidate', 'date': 'Thu, 14 Jun 2012 12:59:39 GMT', 'content-type':

'text/html; charset=UTF-8', 'x-cache-lookup': 'HIT from cp1006.eqiad.wmnet:3128,

MISS from cp1010.eqiad.wmnet:80'}

> r.request.headers

{'Accept-Encoding': 'identity, deflate, compress, gzip',

'Accept': '*/*', 'User-Agent': 'python-requests/0.13.1'}

# 导入requests模块
import requests

# 接口地址
url = 'http://v.juhe.cn/historyWeather/citys'
# 请求的参数数据
da = {'key':'61e0c8a6d9614382afbaaf35dbd3ec6','province_id':'4'}
# 发送请求
r = requests.get(url,params=da)

# 获取返回的json
js = r.json()
print(js)
print(js['resultcode'])
print(js['reason'])
print(js['result'])
print(js['error_code'])